. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. A FIG. 234.—-Types of coiling of the intestines of birds, after Gadow. A, isocoelous; B, anticoelous; C, antipericoelous; D, isopericcelous; E, cyclocoelous; F, plagioccelous; G, telogyrous; p, pylorus. is no caecum, but usually the junction of large and small intestine is marked by one or two caeca (fig. 235). In some cases these caeca are lined with villi, or portions may be ciliated, while the very large caecum of the ostrich is spirally coiled. Many birds have a pocket, the bursa Fabricii, of unknown functi
. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. A FIG. 234.—-Types of coiling of the intestines of birds, after Gadow. A, isocoelous; B, anticoelous; C, antipericoelous; D, isopericcelous; E, cyclocoelous; F, plagioccelous; G, telogyrous; p, pylorus. is no caecum, but usually the junction of large and small intestine is marked by one or two caeca (fig. 235). In some cases these caeca are lined with villi, or portions may be ciliated, while the very large caecum of the ostrich is spirally coiled. Many birds have a pocket, the bursa Fabricii, of unknown functions, developed from the. FIG. 235.—Alimentary canal of Chauna, after Mitchell, c, caeca; I, large intestine; p proventriculus; pv, portal vein; rv, rectal vein; s, small intestine; v, remnant of vitelline duct. dorsal part of the cloaca. It arises from the ectodermal (proctodeal) portion and extends forward, dorsal to the rectum (fig. 236). In some cases it degenerates in the adult. The limits of large and small intestine in the mammals are usually marked by an ileo-colic valve and a single caecum, but there are two cseca in some edentates, while some edentates, bats, carnivorous mammals and many whales lack either caecum or valve. The cascum is larger in the herbivorous forms and frequently. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Kingsley, J. S. (John Sterling), 1854-1929. Philadelphia, P. Blakiston's son & co.
Size: 1472px × 1697px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1912
